Is there a way to make an Object conform to Codable that has an array of other Objects?

I got following Object:

struct Album: Identifiable, Codable {
    let id = UUID()
    let name: String
    let artist: String
    let songs: [AlbumSong]
    let releaseDate: Date
    let price: Int
    let albumImageUrl: String
    var unlocked: Bool
}

I try to fetch my Data from firebase Database and create an Album but it needs to conform to Codable. I guess the problem is the array of AlbumSong

    @State var albums: [Album] = []
FirebaseManager.shared.firestore.collection("songs").getDocuments { querySnapshot, error in
            if let error = error {
                print(error)
                return
            }
            guard let documents = querySnapshot?.documents else {
                return
            }
            self.albums = documents.compactMap { document -> Album? in
                do {
                    return try document.data(as: Album.self)
                } catch {
                    return nil
                }
            }

My firebase Database looks like this:

This is what AlbumSong looks like:

struct AlbumSong: Identifiable {
    let id = UUID()
    let title: String
    let duration: TimeInterval
    var image: String
    let artist: String
    let track: String
}

CodePudding user response：

To use Codable all properties of the type also have to be codable. Most of the Swift primitive types (String,Int,....) do. For your Album to conform you have to conform AlbumSong to Codable

struct AlbumSong: Identifiable, Codable {
    let id = UUID()
    let title: String
    let duration: TimeInterval
    var image: String
    let artist: String
    let track: String
}